| Parameters | 
                                                                                                            
                                        | Mfr | National Semiconductor | 
                                                                        
                                        | Series | LM3687 | 
                                                                        
                                        | Package | Bulk | 
                                                                        
                                        | Product Status | Active | 
                                                                        
                                        | Topology | Step-Down (Buck) Synchronous (1), Linear (LDO) (1) | 
                                                                        
                                        | Number of Outputs | 2 | 
                                                                        
                                        | Frequency - Switching | 1.8MHz | 
                                                                        
                                        | Voltage/Current - Output 1 | 1.8V, 400mA | 
                                                                        
                                        | Voltage/Current - Output 2 | Fixed, Fixed, 1.2V, 350mA | 
                                                                        
                                        | Voltage/Current - Output 3 | Fixed, Fixed | 
                                                                        
                                        | w/LED Driver | No | 
                                                                        
                                        | w/Supervisor | No | 
                                                                        
                                        | w/Sequencer | No | 
                                                                        
                                        | Voltage - Supply | 2.7V ~ 5.5V | 
                                                                        
                                        | Operating Temperature | -30°C ~ 125°C | 
                                                                        
                                        | Mounting Type | Surface Mount | 
                                                                        
                                        | Package / Case | 9-WFBGA | 
                                                                        
                                        | Supplier Device Package | 9-TuSMD (1.54x1.54) | 
                                                                        
                                        | RoHS Status | ROHS3 Compliant | 
                                                                        
                                        | Moisture Sensitivity Level (MSL) | 1  (Unlimited) | 
                                                                        
                                        | REACH Status | REACH Unaffected | 
                                                                        
                                        | ECCN | EAR99 | 
                                                                        
                                        | HTSUS | 8542.39.0001 | 
                                                                        
                                        | Standard Package | 250 | 
                                                                                                        
                            
                         
                                                PMIC - Voltage Regulators - Linear Switching 2 Output Step-Down (Buck) Synchronous (1), Linear (LDO) (1) 1.8MHz 9-TuSMD (1.54x1.54)